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Physics

Physics
How much mechanical work must be done to completely melt 1 gram of ice at 0°C ?

336 J
80 J
2268 J
4.2 J

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Physics
When a number of resistors are connected in series in a circuit, the value of current:

Remains the same
Decreases
Becomes half
Increases

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Physics
The material used in the fabrication of a transistor is

Aluminium
Silver
Copper
Silicon

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Physics
When the milk is churned vigorously the cream from it is separated out due to

Centripetal force
Frictional force
Centrifugal force
Gravitational force

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Physics
During the motion of a projectile fired from the earth surface, ________

Its momentum remains constant
Vertical component of its velocity remains constant
Its kinetic energy remains constant
Horizontal component of its velocity remains constant

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Physics
The slope of a velocity-time graph represents

Displacement
Distance
Acceleration
Speed

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